Apparatus for cement-coating and packing nails.



No. 645,385; Patented Mar. l3, I900.

I'. COPELAND. .7

APPARATUS FOR CEMENT COATINGAND PACKING NAILS.

(Application filed June 13, 1898.; (No'ModaL) 3 Sheets-Sheet l.

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No. 645,385. Patented Mar. I3, I900.

1. COPELAND, APPARATUS FOR CEMENT comm; AND PACKING NAILS.

LApplioation flied June 13, 1898.) (No Model.) 3 Sheets-Sheet 2.

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No. 645,385. A Patented Mar. 13, woo. I. COPELAND.

APPARATUS FOR CEMENT COATING AND PACKING NAILS,

(Application filed. .fune 13, 1898.

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PATENT UEETCE.

APPARATUS FOR CEMENT-COATING AND PACKING NAILS.

SPECIFICATION forming part of Letters Patent N 0. 645,385, dated March13, 1900.

Application filed June 13, 1893.

T0 (0Z6 wltom it may concern.-

Be it known that I, IRA COPELAND, of N ewton, in the county of Middlesexand State of Massachusetts, have invented a new and useful Improvementin Apparatus for Cement- Ooating and Packing Nails, of which thefollowing, taken in connection with the accompanying drawings, is aspecification.

My invention relates to an apparatus for cement-coating nails; anditconsists in means for mingling the cement and nails and of subjectingthe cement and nails to heat, in automaticallydeliveringand packingthetreated nails, and also in the combination of mechanisms for effectingthese results.

The more exact characteristics of my invention may be best understood byreference to the following description, illustrated by drawings, ofwhich= Figure 1 is a side elevation. Fig. 2 is a plan. Fig. 3 is an endelevation looking from the left of Fig. 1. Fig. 4 is an end elevationlooking from the right of Fig. 1. Fig. 5 is a plan showing device forsettling the nails as they are deposited in the keg. Fig. 6. shows inelevation a modification of one of the parts. Fig.7 is a verticalsection of the device shown in Fig. 6.

In the drawings, A A A represent a long metal cylinder so mounted thatits inclination may be varied and adapted to be rotated by asprocket-chain A or by other suitable means. This cylinder is inclosedin a casing B B, which may be of sheet. metal, covered by asbestos orother heat-retainer,or, if desirable,the cylinder may be inclosedlinmasonry. For heating the cylinder and its contents one or more furnaces,as F, may be used. The said furnace or furnaces may open directly intothe chamber formed by the casing 13, from which the products ofcombustion may pass off through the flue F.

The cylinder A is represented as supported on antifriction-rollers B B.

A hopper H is arranged to receive nails, which in leaving the hopperpass intoa shakin g shoe K and gradually slide down the shoe into thechute A and thence into the rotating cylinder A. A second hopper H isadapted to receive the prepared cement, which passes through the shoe Kand chute A and Serial No. 683,871. (No model.)

thence, with the nails, into the rotating cyl= inder.

The shaking shoes K and K are caused to vibrate by the cam L, which isplaced between the free ends of the shoes, and by its rapid rotationimparts motion to both shoes. Cords L L 'serve to hold the shoes againstthe cam so that it will act upon them.

To regulate the delivery of the nails and cement from the shaking shoes,each is hung independently of the other upon a cord or chain k k, bywhich the free end of the shaking shoe may be raised or lowered. As thehoppers and their connections are not new, but of ordinary well-knownconstruction/they need not be fully described.

The cement-hopper H and its adjuncts may be omitted and a meltingreservoir or kettle hopper (illustrated in Figs. 6 and 7) may besubstituted. This device consists of a kettle h, properly incased by thecylinder 72, and adapted to be heated by lamps h h or by any of thewell-known appliances used for such purposes. A tube It leads from thebottom of the kettle to a point from which the liquid cement will bedeposited upon the mass of nails as they enter the rotating cylinder oragitator.

The lower end of therotating cylinder A is mounted uponantifriction-rollers B B,which are journaled upon the sliding end plateD D. This end plate D 1) slides vertically in Ways 0 0 formed on themetallic frame 0 C, which is securely attached to the casing B. Ahand-screw E,working in the bracket piece C attached to the frame 0 O,is adapted to raise or lower the end plate D, and thus cause therotating cylinder A to assume any desired inclination. A chute Aconducts the cemented nails from the cylinder to the keg. The device forsettling the nails in the keg is shown partly in elevation in Fig. 1 andin plan in Fig. 5. This consists of an oscillating platform S, mountedupon a central pivot S and casters S S which, as they roll over thefixed projections S S cause the platform to jostle violently. Thismotion, together with the oscillating motion, causes the nails toreadily settle into the keg. Theoscillating motion is given to theplatform S by the crank-pin T on the rotating disk T, which operatesthrough the link T lever T T pivoted at T and the link T. A swingingblock V, pivoted at V, serves when in the position indicated by fulllines to prevent the keg from being jostled off from the oscillatingtable S. This block V may-be turned away, as indi cated by dotted lines,by withdrawing the ,pin V in which case the keg may be removed andanother one put in its place.

In using the above-described apparatus the nails or other articles to becement-coated are placed in one of the hoppers H H and the ocment in theother. To regulate the amount of nails and the amount of cement enteringthe cylinder, the inclination of the shaking shoes K and K may beregulated by adj ustment of the cords 7c As the cylinder is in constantrotation, the nails and cement falling from the shoes through the chuteinto it will be carried slowly through the cylinder and heated, beingkept in constant agitation until delivered to the chute A and thence tothe keg in'which they are packed. This continuous rotation of theagitator avoids danger of burning the cement due to the stoppage of theagitator for the purpose of discharging and recharging it, anobjectionable feature in the operation of the type of agitator used inthe primitive stage of the art.

It is obvious that in using the above-described continuouslyoperatingagitator, together with its adjustable feeding and delivery devices, asabove set forth, the nails must be weighed after they are coated; butthis continuouslyoperating agitator may be so used as to receiveabruptly a definite quanlity of nails, together with a proper quantityof cement, thus avoiding a subsequent weighing of the product.

To satisfactorily cement-coat nails the following conditions should beobserved: A cement having certain characteristics must be used. Itshould form but a thin coat on the nails; otherwise when packed hot inkegs they would become so strongly cemented together as to not readilyseparate and when separated would present roughness of surface to anobjectionable extent. It must adhere firmly to the nail, which requiresthe nail to be properly heated, as even hot cement will not firmlyadhere to cold nails. Its melting-point must be such that it will not besticky at ordinary temperatures and that it will soften by the heatgenerated in driving, so as to form a union with the Wood into which itis driven. It should be homogeneous as to its melting-point, and itsdistribution should be equable. The operation should be such that aproportionate amount of cement shall be applied to a certain amount ofnails. The mechanical action should be so controllable that all of thenails shall have the requisite amount of agitationin connection with thecement to secure equable distribution of the cement. The thermal actionshould be uniform within certain limits of temperature and steady.

In order to automatically charge the continuously-rotating agitator orcylinder A A A not only with nails fed into it at a regular rate, butalso with coating material fed also at a regular rate and in definiteproportion to the quantity of nails, it is essential to have the coatingin agranulated form or else in a liquid form.

I claim-- 1. In an apparatus for cement-coating nails, an agitatorrunning in a heated chamber, and regulatable devices for proportionallyfeeding nails and cement to the said agitator; substantially as and forthe purposes set forth.

2. In an apparatus forcement-coating nails, a self-delivering agitatorrunning in a heated chamber, regulatable devices for proportionallyfeeding nails and cement to the said agitator, a chute adapted toreceive the cementcoated nails from the agitator and deliver the same tothe keg, and a nail-packing device; substantially as and for the purposeset forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 6th day of June, A. D.1898.

IRA COPELAND.

itnesses:

FRANK G. PARKER, VVILLIAM IEDSON.

